作者:Robert J. Bass、Bernard J. Banks、Michael R. G. Leeming、Michael Snarey
DOI:10.1039/p19810000124
日期:——
The synthesis of macrocyclic lactones related to zearalanone is described. The reaction of salicylic acids with 1,9-dibromononane, 1,9-dichloro-5-oxanonane, and 1,9-dibromononan-5-one was used to prepare the corresponding lactones. Cyclisation of 2-(9-hydroxynonyloxy)benzoic acid, 4,6-dibenzyloxy-2-(9-hydroxynonyloxy)benzoic acid, and 4-benzyloxy-2-hydroxy-6-(9-hydroxy-5-oxodecyloxy)benzoic acid using
Sulfoxide-mediated approach to flavones through one-pot Knoevenagel condensation/oxa-Michael addition/sulfoxide elimination process of β-(o-hydroxyaryl)-ketosulfone with arylaldehydes
gram-scale synthesis of flavones is described by a one-pot straightforward sulfoxide-mediated Knoevenagel condensation/intermolecular oxa-Michael annulation/sulfoxide elimination process of β-(o-hydroxyaryl)-ketosulfones (dual nucleophile) and arylaldehydes (dual electrophile). The expeditious synthetic route sets up flavones, including the bond formation of one CO and one double CC bonds via a formal (5 + 1)
在本文中,通过一锅法直接亚砜介导的 Knoevenagel 缩合/分子间 oxa-Michael 环化/β-(o-羟基芳基)-酮砜(双亲核试剂)和芳基醛(双亲电试剂)。快速合成路线建立了黄酮,包括通过形式 (5 + 1) 环加成形成一个 C O 键和一个双 C C 键。此外,其中,化合物70 亿可能是进一步开发药物以造福抗衰老领域的绝佳起点。
The pigments of “dragon's blood” resin. Part VI. 3 : 5-Dihydroxydiphenyl ether